@bleach551

I never shoot on Auto WB though that's not the issue. I always either custom white balance, or set on daylight. The whole image isn't pink or green, it's just the highlights. There are posts from people with the same issues from different cameras. It's something to do with Highlight Reconstruction where the program tries to re construct the detail but ends up changing the colours and there is no way to turn it off.

I don't get how I can take the same picture with the same settings on my GH3 and pull the exposure right down and have no colour change but have this camera even with a subtle change turn bright pink

https://www.dropbox.com/s/1x0a52wak3s6ryz/P1200485.RW2?dl=0

ABove is the RAW file if you want to try it out yourself. This is it with the exposure brought down to really show off the extent of the pink.

I have tried it in Lightroom 5.6, Photoshop CC with camera raw 8.6 and Raw Therapee and all of them do the same thing.

If I do an exposure adjustment and lower highlights using the in camera raw editor there are no highlights that turn pink they stay white all the way.

I recommend DxO to develop raw stills, then export or "share" to LR for any final adjustments. Assuming you shot a Macbeth card as well, there are tools that will zero out any color changes.

Very strange. Your green channel seems to be clipped at a value less than 255? I notice that the ISO is 100. I don't have a GH4 (just a GH3). Does this happen for the native ISO (200) as well? I know that Panny does some tricks to get the non-native ISOs. It might be worth trying to duplicate this at ISO 200? Just a wild guess. Maybe there is some strange mis-match in their circuitry for obtaining the expanded ISOs? I also notice that it is a 20 second exposure. Are you using some ND filter that cuts out the Green?

So you are definitely on to something @jjj_ri_usa !!!

The magenta highlights only occur on the expanded ISO shots. Anything that is 200 and up doesn't exhibit those issues!

My only question with that, is that I can take that same file shot at iso 100, edit it using the raw conversion in the camera, bring down the exposure and the highlights stay white, so it's something to do with the profile for adobe I assume?

I've always stuck at iso 200. if your shooting at iso 100 your hitting the "low iso" settings right and thats not recommended.

If it is an interpolated ISO, I would not use it unless I was stuck with too much light and no ND filter.

Exactly! @joethepro

If I'm shooting in bright light, the lower the iso the better for me at least, but this sounds like a bug to me! I would love it if some other members could test this out for themselves to shoot at iso 100 and post the raw files to test!

I took a quick look at the headshot using DxO Pro (which I find superior to LR CC for raw file processing). The shadow from the pendant is pink, but not the pendant. I couldn't make the highlights go pink. DxO didn't recognize the lens, so couldn't do auto processing of the image. Agree using color card might help. I haven't seen this behavior at ISO 200 even with very high contrast subjects in bright daylight.

I had the same pink highlights when loading your shots into Apple Aperture with the new GH4 RAW support. I have not had this effect with any of my GH4 photo's. Maybe you have a camera fault? Have you tried checking ALL camera settings to be certain there is nothing odd set in the camera?

I used Silkypix from Panasonic and the problem does not happen. I can only deduce that 3rd party RAW support does not take into account the extended ISO100 setting. I think I'll use Silkypix for ISO100 RAW shots and Aperture or Adobe RAW for everything else. It does make me worry that other issues may arise with RAW files at other settings in future.

I don't have a GH4 and I'm kind of guessing here, but if it's anything like the cameras I know, there is no point in using an extended ISO setting when shooting raw. An extended ISO setting of 100 will have the same highlight range as a native ISO 200, but less shadow range. The camera's display (and JPEG images) may show extra highlight range at ISO 100, but whatever extra range it shows would also be recoverable from a raw image at ISO 200. There's up to 1 stop of additional highlight range at all native ISO settings relative to the JPEG, depending on the white balance setting. Shooting raw at the extended ISO 100 can lead you to believe there is more hightlight range available than there really is, since the amount of extra highlight range depends on the white balance. Shooting at ISO 200 guarantees your hightlights are covered if the image is exposed correctly, regardless of the white balance setting.

If Silkypix decodes the ISO 100 raw images correctly and other software does not, it just means the other software is wrong. This isn't Panasonic's problem.

The situation is flipped when using extended high ISOs: the extended high ISOs have less highlight range and the same shadow range as the top native ISO, so again, there is no point in using them for raw shooting.

The bottom line is that the extended ISO settings are just for JPEG shooting. They give you nothing that you couldn't get with raw shooting at a native ISO setting, and the camera won't perform as well as in its native ISO range.

Panasonic doesn't provide 3rd-party software makers with information about how to decode the GH4's raw files. The raw format is proprietary. 3rd parties had to reverse engineer it. At least that's how it usually goes with raw formats. It's unfortunate and it's a good argument for the DNG standard format.